Photo-lithographer



I .To all t2/hom) it may ."conceln, .f je 1 Beit known that I, "GEORGE F. y `of theycityofWashington, in the county of l Washington, inthe Districtof Columbia, have duce theresult. I z `z V saws and their connections. k `A represents the frame operating parts 5l. Af; the l. table; upon which l f give motionjto the sawsand feed'rollers.

; 1 UNiTfDSTATEs Woorsroiv,

`invented certain Improvements in Machines l for MakingWindow-Blind Slats and other SimilarArticleeof `which thefollowing is a specification. f

hisl invention its object the con- I struction of I ama'chine forproducing in a complete `iinishedystate ifrom the rough plank such f articles as slats for windowfblinds, Imuntins and bars for window-sash, or any small pieces 3 o f wood of; whicha large number of the same j width and thicknessare required, and'which l are producedjin afinishedstatefrom the plank by once passing" through the machine, where` they are slit to the thickness by saws, planed onthe sides, k and such moldings wrought upj V on the edges as `fancy-dictates; and itconhsists in the construction, arrangement, andcombi- `nation of the partsfof themachine that pronmthe drawings, Figure e1-isl a side view of themachine.` I Figz` is lavflongitudinal sectional view of Eig.` 11. 1Fig.8` is a top plan F jview.` .'Fig. 4 is anendl elevation. Figis-a iside viewof the saws and plates, and Fig. 6 is aflongitudinal sectional view of the'` gang of that supports the the rough plank to `loe made into slats is placed.

andl are adjustable,

incide in directionwith the saws and the "guides inthe lineoffthesaws'.

B is the main lrivinghaft, placed trans.-

"vereselyacrossjthefmachine and near itsforfward end, and being free tol revolve on. bear- Qjings inproperboxes. y I y effectue two! othetjpuneyson. shaft B, that l PATENT C)frieren@M 1 enoeenn WooLsToNmn WAsHINeroN, DISTRICT oF COLUMBIA.

1`IJMRQVEM ENT "|N BLmD-SLAT MACHINES. 7

' Sweetman-arming 'partei Letters raten; No. 112,666, ama March 14, im.

Bf Biff are two pulleys on Shaft B, tht

heads.

`a sufficient number .of planing-teeth, c and c",

'l interposed between the series of teeth c, to

k plane the sides of the kerf out by the slitting- Vteeth c, as seen in said Fig. 5. `The teeth c are swaged to cut the width of the kerf, and must bebroad `enough to cut the kerf suffi- 'flution to, the saw. `The planer-teeth c are constructed as seen in Fig. 5, and their cutting-edges in such position that they have a planinfrftooth is in advance of the cut that. is l on the back of the tooth. These teeth c fare beveled to edges and set to opposite sides of i the saw-plate, andso as to cut a thin shaving from each side of the kerf. The planing-teeth or planing edges, which are set to opposite i sides ofthe saw-blade, and so as to cut with a that the cutting shall be done at or nearly at the center of the projection of the tooth, and Aby `being slightly wider in their set than teeth c,'will finish up the planing process and leave the surface of the'wood smooth and perfect in Qiinish.` Anyl number of these saws may be saws forming the gangy are placed upon the saw-shaft G, and of the proper width apartfor the thickness of the slats, as may be desired, and fastened in such position withrelation to ',-device for such purpose.

saws the proper width apart, are also placed upon the saw-shaft and .between the saws, and

cut and plane the slats to the thickness desired.`

give revolution to the planer or molding-` G is atransverse shaft, upon which are made v teeth, c c, Fig. 5, in series, and there are also ciently wide to allow perfect lfreedom of revol `backward cut-*that is, the front part of thel c lare formed in hook shape on their cutting drawjcut; or they may be curved slightly, so

`used. in a gang, accordi-ng to the width of plank used in making `the slats with.` rlhe l eachother as may be wished by anyknown y e The washers d, that arel used to separate the are made of such thickness as to havethe saws j Outside of the saws there are washers d', that I L bear against the outsides of the saws, and are held firmly in contact with the saws by screwnuts d, turning on screw-threads on shaft C, and thus hold the gang of saws, with the i11- termediate washers, d, that gage the distance between the saws, firmly and securely in their position.

e e e are thin metal disks or `plates of less diameter than the saw,and having a center opening, tofreely receive the washers d upon shaft G and have them revolve in such opening. rlhese disks are made fast to the longitudinal adjustable guides fff, that are placed on both sides of and between each saw, forming a guideway to prevent the slat from touehing the saw while passing between them and guide them in their passage between the edgeplaners, to be finished before they leave the machine by means of holding-screws f f,pass ing through the disk into a screw-hole in the guidesf, as seen in Fig. 6. rllhe guide plates or ways f f f are of metal, though they may be made of wood or -other material that will answer as well, and are constructed to receive the saws C and disks c between them, and are placed in a frame or clamp, D, in such manner as to be adjustable nearer to or farther from each other (as the saws are adj usted) by placing adjusting-blocks f, that form the bed and upon which the slats slide, between them, and then clamping them together by clamping-screws d, as seen in Fig. 3. rlhese guideways continue the entire length of the machine, except where they are cut away to admit the under cylinder-cutter to plane the lower edge of the slat, and are supported on as many transverse clam p-frames D as may be necessary to give them proper solidity land strength.

E and E are revolving cylinders, having adjustable cutters E upon them, by which the edges of the slats are planed or molded, as desired. The cutters E may be plain or straight on their cutting-edges; or they may have any shape that will give such configuration to the edge of the slat as may be desired. as they can be changed from the cylinder and have as many different cutters attached as wanted, and they are held, when adjusted, by means of the holdingscrews c c. The cylinder E is upon a shaft, E3, that is journalcd and revolves in boxes that are attached to the main frame A, and in such position that the circuit of the cutters in their revolution will just be above the bed of the machine between the guideways f f f, before the cylinder, and dress the lower edge of the slats, when they will rest on the bed between the guideways, which is a little higher after passing the clyinder than before it. Cylinder E is journalcd in and supported on adjustable boxes 0', which are made to slide vertically on upright screw-posts c'L e", and adjusted thereon by the adjusting-nuts e5 and e, so that the upper cylinder isadj usted to any desired width of slat.

To feed the stuff tothe saws and conduct it through the operation of sawing, planing the sides, and molding the edges of the slats, revolving feed-rollers F, F, and F are employed. Feed-roller F is used to feed the rough plank to the saws, and is located so as to take hold of the plank before it reaches the saws, while roller F takes hold of and conducts the slats after being sawed and planed on their sides to the revolving` cutters, that plane or mold the edges, while roller Fl takes hold of thc edges of the slats after they are planed or molded on their edges and conducts vthem in order out of the machine finished.

Feed-roller F is fluted longitudinally, so as to have a better hold upon and feed the stuff to the saws without slipping on the surface of the plank, and is journalcd in sliding boxes that freely slide between upright posts G G, the j ournal-boxes having grooves on their sides that slide in a tongue on the posts, by which means they are kept in a vertical position as they slide to accommodate the different thickness of plank that is feed into the machine. Feed-roller F is journalcd in boxes that slide between upright posts G, and is made to be adjusted to stuff or slats of different widths by means of the cross-girt g, which goes transversely across between the upright posts G, and is firmly attached to the journal-boxes in which the roller F revolves, and upon the top side of said cross-girt r/ are raised thimbles g f/, in which the lower ends of temper-screws g are pivoted.

On the top of posts G G', and fast thereto, is cross-girt g, through which are holes, with screw-thread tapped therein, which are vertically above the thimble g g. The temperscrews g are screwed through the holes in cross-girt y and go into the top of the thimbles g on cross-girt g, and are made fast thereto, and by turning the screws gmthe cross-girt g, with the journal-boxes and feed-roller F', will be adjusted higher or lower, as the direction in which the screws (1 are turned will determine.

Feed-roller F is also fluted longitudinally, like F; or it may have a plain or other corrugated surface, as may be best for the work to be fed along byit. Feed-roller Fis constructed and arranged in a similar manner as roller F, and is between two upright posts, G, with cross-gifts g* and g5, and regulated by screws g in the same manner as abovedescribed for F, the only difference being in the construction of the face of the roller, which is smooth and straight on its face, or it may have grooves cut transversely to its axis that will conform to the shape of the edge of the slat asfinished by the revolving cutters 011 the cylinder E.

The planing or molding cutter-cylinder Eis revolved by a belt, b', from pulley B on the main transverse driving-shaft to a pulley on the cylinder-shaft. The under cutter-cylinder is revolved by belt b from and around pulley B to and around a pulley on the shaft of the cylinder E. rlhe belt b is kept at the right f :Upon the end of saw-shaft 1.. gearwheel, h, which isrevolving at high speed. his wheel h gears into gear-wheelH, of larger size andfmore teeth, on shaft, and upon this shaft is a toothedpinionfgear-Wheel, c, gearing y into gear-wheel `II on shaft t.: On shaft t" is angothertoothedpiniomf,gearingintogear-Wheel E `rI on transverse shaft j,-xwhich isljournaled in :boxes on :the under side ofthe mainplate of y frame A, yandtraversestheyvhole width of the "",strain bymeans or' astrainpulley,b3, attached toan axlekon sldingand slotted plate b, held by holding-screwb'as shown in Fig. `2.

In order to "give the feed-roller F` liberty to wrise f and fall, tand to Jfbe `in contact with the "plank, f, varying :in thickness, sufficiently hard ltoinot slip thereon,andllconsequently notfeeding it linto* the machine," a device novel in con-V struction and'operation o is introduced to produce the desired result.`

C is`- a y toothed frame. i i

,K 1 g On H the center of the length of shaft j is made fast 'gear-wheel J,`fwhicl:"1r gears into gearwheel 1J f on short shaft j( .f Asthe transverse shaft j 1 3 krcrosses thefmachine, itpasses through boxes, in which it revolves, onthe end 'of frame K, andfgivessupport to said frame at the end to @which it isso attached. Shaftj `is'journaled L inboxes on frame K, and extends vsome dis` tance" to each side of said frame K, and ateach end thereof hasasprocket-wheels 7c, which, by the `means kof gsprocketchain k', 'going around sprocket-wheelslon the outer ends of feedv roller F, `gives revolutionto it, and sprocketgchainth lrunning from-and` around roller Ffto and aroundsprocketwheels` Z `on roller F,

gives revolution also tothat roller, and, if del sired,'rollerF" can `be revolved by the same l, means when necessary. e

" i. Nearthe forward end ofthe pendent frame f y Kis a transverse rockshaft, m, journaled in boXes attachedto the frame," and in the center y `of 'its length is a square section large enough to receive thergraduating-screw n in a hole having Fig`2 i "i .i At the top ori upper end of the graduatingscrew n isa hole made centrally in its end7 to receivey the end `of the bent wire spring O,-

which is bent and coiled one turn or niore around inthe center of its length, and the other ,y endis bent andlooselyjinserted in thirnble o,V y that is firmly attached tothe under side of the fa screw thread therein, vas seen in frame A, .01' t0` any" other convenient part of the machine. y

At each end of the shaft j', and outside of the sprocket-chains, is a stirrupconnection, p,

which rigidly connects shaft j with thefeed-` roller Fzby having the feed-rollerk shaft and shaft j pass through holes for that purpose in the ends of the stirrups p. By thus connect-y ing' the feed-roller F with the shaft j and the shaft j in ailexible frame, made so'by thebent and coiled spring O andthegraduating-screw gz, the feed-rollerwill surely accommodate itself to plank of different thickness, and by turning the, graduating-screw n the roller will be made *toI have the same amount of pressure force upon ,the -feed-roller through the screw n, frame K, and connecting-stirrups p.

" :L is a metal shield to protect gear-wheels J and J from the dust and shavings from the gang of saws.

I Having thus described niyinvention, whatI f desire toclaim, and desire to secure by Letf ters Patent, isi Y l. The gang of circular saws Q each having the teeth c, c', ando, incombination with the metal disks e, constructed and arranged to operate in the manner described.

2. 'The adjustable vguides f f f,in combina- A tion with the gang of adjustable saws having the `slitting-teeth @and planing teeth c and d',

and edge-planing cylinders E and E', with cutters E, constructed and arranged to operate Y f ,consisting of the combination of the adjustable feed-rollers F F F, and the means of operating them, the gang of adjustable circular and planing saws C', adjustable guides fff, and planing-cylinders E and E, with their cutters E, when constructed and arranged in its several parts to operate in the manner and f for the purpose set forth.

GEORGE F. wooLsToNV A. Witnesses: l

EDWIN A. S'rEvENs, n Janus Sronns. 

